F300 Megablock Series Fieldbus Device Couplers

Transcription

1 F300 Megablock Series Fieldbus Device Couplers Instruction Manual INM F300

2 DECLARATION OF CONFORMITY We declare under our sole responsibility that the F3xx Series products listed below, to which this declaration relates, conform with the requirements of the Directives below by compliance with the standards listed: 1. Council Directive 2004/108/EC (EMC Directive) relating to Electro-Magnetic Compatibility. EN :2006 Class A equipment. Table 2 - Industrial Locations 2. Council Directive 2006/95/EC (Low Voltage Directive) relating to Product Safety. EN :2001 (see Note 4) 3. Council Directive 94/9/EC (ATEX Directive) relating to equipment and protective systems intended for use in potentially explosive atmospheres. EN :2006, 2009; EN :2007; EN :2005, 2010; EN :2008 Where products were intially assessed for compliance with the Essential Health and Safety Requirements of the Directive using earlier harmonised standards, a subsequent review has determined that technical knowledge is unaffected by the current harmonised standards listed above. Product Description EMC 1 LVD 2 ATEX 3 Cat1/Cat2 ATEX Cert No. Cat3 ATEX Cert No. F97 Overmolded Terminator Yes Yes Yes None None 5 F304* F308* F312* 4-port Megablock with screw terminals with F97 terminator 8-port Megablock with screw terminals with F97 terminator 12-port Megablock with screw terminals with F97 terminator Yes Yes Yes None RELC11ATEX1010X Yes Yes Yes None RELC11ATEX1010X Yes Yes Yes None RELC11ATEX1010X Notes relating to CE Marking: 1. Entries in this column may be: Yes Product conforms to the EMC Directive N/R Product is not required to conform to the EMC Directive 2. Entries in this column may be: Yes Product conforms to the LV Directive N/R Product is not required to conform to the LV Directive 3. Entries in this column may be: Yes Product conforms to the ATEX Directive N/R Product is not required to conform to the ATEX Directive 4. Compliance withe the LVD is established by evaluation of the product by FM to FM3810(2005) / ANSI/ISA :(2004). The ANSI/ISA document is based upon IEC , Second Edition, 2001, witha a few national deviations. There is no material difference in this standard and EN :2001 with regard to the LVD. 5. The F97 is an accessory for the F3xx products. It is certified as part of the F3xx certification; however, it is not marked to be a stand-alone certified product. * Standard connectors on Megablocks are Pluggable Screw Terminal. A -PC on the part No. indicates that the optional Pluggable Spring Clamp connectors are used, and the optional -PD indicates tha the optional Pluggable Insulation Displacement connectors are used. 21 December 2011 Luton, England Signed: J.N. Malins J.N.Malins - Technical Director Measurement Technology Limited Great Marlings, Butterfield, Luton Bedfordshire, United Kingdom LU2 8DL Tel: +44 (0) Fax: +44 (0) Registered in England No ii INM F300-2

3 CONTENTS 1 OVERVIEW DESCRIPTION COMPONENTS AND ACCESSORIES MECHANICAL Mounting orientation Enclosure requirements DIN-rail mounting Removal from DIN-rail ELECTRICAL CONNECTIONS DC Power Requirements Terminator Trunk connections Spur port connections Cable screen connections Surge protection TESTING Power LED Spur LEDs ROUTINE MAINTENANCE ATEX SAFETY INSTRUCTIONS General Installation Inspection and maintenance Repair Marking FM CONTROL DRAWINGS IECEx SAFETY INSTRUCTIONS Conditions of safe use IECEx Control drawings MTL Instruments Group. All rights reserved INM F300-2 iii

4 GENERAL SAFETY INFORMATION The following methods are used in this manual to alert the user to important information:- WARNING! Warnings are provided to ensure operator safety and MUST be followed. CAUTION Cautions are provided to prevent damage to the instrument. NOTE These are used to give general information to ensure correct operation. SAFETY INSTRUCTIONS FOR INSTALLATION AND OPERATING PERSONNEL The operating instructions provided here contain essential safety instructions for installation personnel and those engaged in the operation, maintenance and servicing of the equipment. WARNING! Failure to comply with these instructions can endanger the lives or health of personnel and risk damage to the plant and the environment. WARNING! The responsibility for planning, installation, commissioning, operation and maintenance, particularly with respect to applications in explosion-hazard areas, lies with the plant operator. Before commencing installation or commissioning: Read and understand the contents of this manual and the product datasheet Ensure installation and operating personnel have received adequate training for this task Ensure that any operating instructions are fully understood by the personnel responsible. Observe national and local installation and mounting regulations (e.g. IEC ). WARNING! If these assemblies have been used previously in general electrical installations, they MAY NOT be used in explosion-hazard area applications. During operation: Make the relevant instructions available at all times to the operating personnel. Observe safety instructions. Observe national safety and accident prevention regulations. Operate the equipment within its published specification. Servicing, maintenance work or repairs not described in this manual must not be performed without prior agreement with the manufacturer. Any damage to this equipment may render its explosion protection null and void. No changes to any of the components that might impair their explosion protection are permitted. If any information provided here is not clear: Contact MTL or one of its representatives. NOTE Improper installation and operation of the enclosure can result in the invalidation of the guarantee. iv INM F300-2

5 F300 Megablock Series Fieldbus Device Couplers INM F300-2 Figure Megablock models F312, F308 and F304 1 OVERVIEW F300 Megablocks are DIN-rail mounted, device couplers for Foundation fieldbus or Profibus PA networks. They allow connection of field devices to the segment trunk cable and provide short-circuit protection to the segment. Megablocks minimize hand wiring and allow individual devices to be added to and removed from the segment without disrupting network communication. Megablocks are available in four, eight, and twelve port versions. Multiple Megablocks are easily wired together to allow larger segments to be constructed. Each F300 Megablock includes an F97 Terminator for installation in the trunk terminals, which is clearly marked with a large T for easy identification by field personnel. Individual surge-protector modules (FS32) can also be fitted to any of the Megablock fieldbus terminals to provide protection against induced surges and transients that can potentially destroy or degrade certain components inside the F300 Megablocks. 2 DESCRIPTION Simple and reliable interconnection Each Megablock has dedicated connections for the fieldbus home run or trunk cable. Trunk connections are identified by their black connectors. Numbered (grey) connectors are provided for each spur. Wiring connections to the Megablock are made using pluggable connectors (screw terminal type are standard, but other connection styles are available). These allow wire terminations to be made to the individual connectors, which are then plugged into the Megablock. Devices can be connected and disconnected easily during commissioning. On completion, the connector retaining screws are tightened to secure each connector to the Megablock. INM F

6 Short-circuit protection To minimize susceptibility to single points of failure, F300 Megablocks are provided with built-in SpurGuard short-circuit protectors, which prevent the entire Fieldbus segment from being pulled down in the event of a short circuit on any one of the individual field devices or spur cable runs. NOTE During a short circuit, the shorted spur draws more current than a normal Fieldbus device - this must be taken into account in segment design. Diagnostic aids Each Megablock comes with a green LED to indicate whether DC Power is present, and a red LED next to each numbered spur indicates when the spur is in short circuit. 3 COMPONENTS AND ACCESSORIES Product part numbers and their descriptions are listed below. Part Number F304[-PC]* F308[-PC]* F312[-PC]* F97 Description 4-way Megablock 8-way Megablock 12-way Megablock Terminator for F300 series Megablocks F300-A01-5 Trunk-spur partition pack of 5 FS32 Spur surge protector module F300-BAR-5 FS32 grounding bars for trunk - pack of 5 F304-BAR-10 FS32 grounding bars for F304 - pack of 10 F308-BAR-10 FS32 grounding bars for F308 - pack of 10 F312-BAR-10 FS32 grounding bars for F312 - pack of 10 * The standard connector for the Megablock is a pluggable screw terminal (elevator type). Pluggable spring-clamp connectors rely on constant spring pressure to maintain contact with the wire. To order Megablocks with pluggable spring-clamp connectors, add a PC suffix to the part number (i.e. F304-PC). Up to two bars may be required for each Megablock. 4 MECHANICAL 4.1 Mounting orientation Megablocks mount vertically or horizontally on 35mm DIN rail within a field junction box The use of DIN rail end stops are recommended to prevent sliding (especially for vertical installations). Eight, and twelve port Megablocks have areas on their body for labelling so that segments can be easily identified according to plant standards. 4.2 Enclosure requirements General requirements Megablocks may be mounted in hazardous (classified) areas see section 8. The following conditions must also be satisfied to ensure safe and reliable operation. a) Prevent any form of pollution that could compromise the operation of the unit. For example, choose an unpolluted location or a suitable enclosure to protect the assembly. b) Provide an adequate level of mechanical protection. This can be achieved by selecting a protected location, a suitable enclosure, or a combination of both. 2 INM F300-2

7 c) Ensure that all cable entries and connections are secure by making provision for the careful routing and securing of all cables. d) Provide adequate security against unauthorized interference. e) Conform to the permitted ambient temperature range of 40 C to +70 C Outdoor mounting In addition to the General Requirements above, if the Megablock is mounted in an outdoor location, use a suitable enclosure with a minimum of IP54 ingress protection. A higher level of ingress protection rating will be necessary if the working atmosphere is, or can be, corrosive, or if the enclosure is subject to wet or dusty environments. 4.3 DIN-rail mounting The Megablocks are designed for mounting on 35mm x 7.5mm T-section top hat DIN rail to EN50022 and use built-in DIN rail clips to attach to the rail Mounting procedure Megablocks are attached to the DIN rail using a push-and-tilt method - as illustrated on the body label and in Figure 4.1 below. Tilt the Megablock towards the trunk-connector side of the Megablock and then engage the DIN-rail clips under the ledge of the DIN rail. Push the Megablock against the edge of the rail then rotate the Megablock until it sits flat onto the DIN rail, then release the pressure to allow the clips on the other side to engage. 1 Push Remove 2 Install Figure 4.1: DIN Rail Installation and Removal 4.4 Removal from DIN-rail Refering to Figure 4.1, push the Megablock against the edge of the DIN rail, tilt the other side of the Megablock up and away from the DIN rail, then release the side pressure to disengage the DIN rail clips from the DIN rail ledge. 5 ELECTRICAL CONNECTIONS The Trunk and Spur connectors are pluggable (with securing screws) and available in the standard screw-terminal version or a spring-clamp version. Megablocks with spring clamp connectors have a PC suffix on the Megablock part number (-PC). See Figures 5.1 and 5.2. The terminals can accept the following conductor sizes: Type Conductor size Screw terminals 0.14 to 2.5mm 2 Spring clamp terminals (-PC) 0.20 to 2.5mm 2 NOTE A torque screwdriver set between Nm is recommended for tightening all terminal screws. INM F

8 Figure 5.1: Screw Terminal Figure 5.2: Spring Clamp NOTE When wiring to spring-clamp terminals, use a screwdriver with a 3-4 mm blade to depress the spring-clamp button before inserting the termination cable. See Figure DC Power Requirements Megablocks draw DC power from the fieldbus trunk segment they are connected to. The minimum DC input voltage, and current required, vary with the Megablock type. Refer to the F300 datasheet for exact current requirements. The maximum input voltage is 32V DC. 5.2 Terminator A terminator (Model No. F97) is provided with each F300 Megablock. The terminator should be installed on the trunk of the last Megablock in order to correctly terminate the bus. The terminator is placed in the second set of terminals on the trunk connector. For spring clamp terminals, push the terminator firmly into place. Take care to orientate the terminator so that the T F97 molded logo is facing inwards Figure 5.3 F97 terminator towards the body of the Megablock, otherwise difficulty will be experienced in accessing the spring-clamp buttons to remove it. For screw terminals, loosen the screws, insert the terminator so that the molded logo is visible and then tighten the screws. The F97 terminator has no specific polarity but inserting it with the T visible clearly identifies the component, and its purpose. When not in use, the F97 should be stored in the convenient storage slot provided in the F300 body close to the trunk connection (Figure 1.1 shows it mounted this way on the F304 model). 5.3 Trunk connections Each trunk connector provides two sets of interlinked (+), ( ) and cable screen (S) connections. The second connection enables the user to onward connect the trunk to a further Megablock and avoids breaking the connection if an upstream Megablock needs to be removed. The second connection can also be used, as mentioned above, to install the F97 terminator if it is the last Megablock on the segment. See Section 5.5 for information on cable screen grounding. WARNING! It is not permitted to connect or disconnect the trunk wiring in a hazardous area without a gas clearance certificate or unless the circuit to which it is connected has been de-energised. 4 INM F300-2

9 5.3.1 Ex na [ic] applications When the equipment is installed in an Ex na [ic] application, a trunk-spur partition* must be installed to segregate the trunk and spur wiring - see Figures 5.4 and 5.5. * available in packs of five as Part No. F300-A01-5 Partition Trunk terminal Terminator Figure 5.4: Trunk-Spur partition installation Figure 5.5: Trunk-Spur partition in position Position the partition as shown in Figure 5.4 and locate the fingers into the channels on the sides of the device body. Press the partition onto the body until the fingers click into place at the bottom of the case - see Figure 5.5. The channels have different sizes so the partition cannot be installed backwards. 5.4 Spur port connections Each spur port connector provides (+), ( ) and cable screen (S) connections. See section 5.5 for information on cable screen grounding. NOTE Where permitted by local codes, the (grey) spur port connectors may be connected or disconnected in Zone 2 hazardous areas/locations without isolating the trunk power. 5.5 Cable screen connections The S screen terminals for the trunk and the spurs are interconnected/commoned within the F3xx device and should be grounded at only one point for the whole segment (i.e. a single-point ground). The MTL recommended position for that connection is in the control room close to the power supply at the DCS, or else in accordance with local system practice. 5.6 Surge protection Each fieldbus terminal, trunk or spur, on a Megablock can be fitted with an FS32 surge protector to prevent damage to the internal components. The FS32 uses the same pluggable connector as the field connector; so the field connector is removed, the FS32 inserted and the original field connector is fitted to the FS32. See Figure 5.6 & 5.7. Trunk - F300-BAR Spur - F312-BAR M4 ground screw locations Figure 5.6: Typical grounding bars Figure 5.7: With some FS32 modules INM F

10 Mounting brackets, known as grounding bars, can be fitted into ready moulded positions on both sides of the Megablock. (Grounding bar types are chosen to suit the model - see page 2.) The FS32 has a central mounting screw to provide a mechanical and electrical connection to the grounding bar. The bar must then be wired to a lowimpedance, protective local ground point in order to dissipate any induced surge currents. NOTE If a trunk-spur partition is to be fitted (Section 5.3.1), install it before mounting the FS32 modules adjacent to it. To mount FS32 surge protection modules on a Megablock: 1. Remove and retain the pluggable terminals from one side of the Megablock. 2. Locate the grounding bar lugs in the moulded positions on the side of the Megablock and press it firmly into place - see Figure Repeat 1 and 2 for the other side of the Megablock, if required. 4. Use an M4 screw and ring terminal to connect each grounding bar to a suitable lowimpedance ground point - see Figure Mount an FS32 into one of the empty sockets and tighten its two plug screws, then tighten the grounding screw into the mounting bar. 6. Insert one of the pluggable terminals into the FS32 and tighten its securing screws. 7. Repeat 5 and 6 for all the other FS32 modules. A separate grounding bar (F300-BAR) is used for the trunk connector, which must be similarly connected to ground - see Figures 5.6 & 5.7 Follow a similar procedure to the one above for the trunk circuit. NOTE The FS32 surge protector is not certifed for installation in a Zone 2 hazardous area and should be used only in applications where the Megablock is installed in a safe (non-hazardous) area. Consult MTL for information on surge protection in Zone 2 hazardous areas. 6 TESTING 6.1 Power LED Each Megablock has a green power LED (labelled PWR). This LED lights when the segment DC voltage exceeds 10V to indicate power is present. 6.2 Spur LEDs A red LED is located next to each Megablock spur port. The LED lights when the SpurGuard current-limiting function is activated by a short-circuit on the spur. 7 ROUTINE MAINTENANCE Check the general condition of the installation periodically to make sure that no deterioration has occurred. At least every two years (and more frequently for particularly harsh environments) check that: cable, wire connections, terminations, and screens are in good condition the green Power LED is lit no red spur LEDs are lit no signs of damage or corrosion are present WARNING! The plastic parts can store static charge. Clean only with a damp cloth to prevent static buildup. 6 INM F300-2

11 8 ATEX SAFETY INSTRUCTIONS The following information is in accordance with the Essential Health and Safety Requirements (Annex II) of the EU Directive 94/9/EC [the ATEX Directive - safety of apparatus] and is provided for those locations where the ATEX Directive is applicable. 8.1 General a) This equipment must only be installed, operated and maintained by competent personnel. Such personnel shall have undergone training, which included instruction on the various types of protection and installation practices, the relevant rules and regulations, and on the general principles of area classification. Appropriate refresher training shall be given on a regular basis. [See clause 4.2 of EN ]. b) This equipment has been designed to provide protection against all the relevant additional hazards referred to in Annex II of the directive, such as those in clause c) This equipment has been designed to meet the requirements of EN Installation a) The installation must comply with the appropriate European, national and local regulations, which may include reference to the code of practice EN In addition, particular industries or end users may have specific requirements relating to the safety of their installations and these requirements should also be met. For the majority of installations the Directive 1999/92/EC [the ATEX Directive - safety of installations] is also applicable. b) This apparatus may be installed in a safe area and also in a Zone 2 location providing that the relevant installation conditions are met. When mounted in a Zone 2 location the apparatus must be provided with an enclosure, which offers an additional degree of protection appropriate to the area classification. c) Unless already protected by design, this equipment must be protected by a suitable enclosure against: i) mechanical and thermal stresses in excess of those noted in the certification documentation and the product specification ii) aggressive substances, excessive dust, moisture and other contaminants. Read also the Special Conditions for Safe Use (below) for any additional or more specific information. Special Conditions of Safe Use for Zone 2 applications When mounted in Zone 22 (dust) hazardous areas, the enclosure in which the apparatus is mounted should meet the requirements of EN The apparatus is to be installed in an enclosure which maintains a minimum ingress protection rating of IP54 and meets the enclosure requirements of EN , EN , and EN as appropriate for the installation. Provisions shall be made externally to the apparatus to prevent the rated input being exceeded by transient disturbances of more than 140% of the rated voltage value of 32V. See footnote. 8.3 Inspection and maintenance a) Inspection and maintenance should be carried out in accordance with European, national and local regulations which may refer to the standard EN In addition specific industries or end users may have specific requirements which should also be met. b) Access to the internal circuitry must not be made during operation. 8.4 Repair This product cannot be repaired by the user and must be replaced with an equivalent certified product. (continued on following page) NOTE: All MTL fieldbus power supplies are designed to protect the fieldbus trunk from transient disturbances on the DC power feed and will meet the requirements of maintaining transient disturbances below 140% of the rated voltage of 32V. INM F

12 8.5 Marking Each device is marked in compliance with the Directive. This information applies to products manufactured during or after the year Typical certification marking NOTE For details of FM and IECEx approvals see Sections 9 & INM F300-2

13 9 FM CONTROL DRAWINGS INM F

14 10 INM F300-2

15 Note: The F301 Device Coupler is not covered by this manual, and is not currently available from MTL, but is included here as part of the overall certification documentation. INM F

16 10 IECEx SAFETY INSTRUCTIONS 10.1 Conditions of safe use Ex na [nl] IIC T4 1. The apparatus is to be installed in an enclosure which maintains a minimum ingress protection rating of IP54 and meets the enclosure requirements of IEC and IEC Provisions shall be made externally to the apparatus to prevent the rated input being exceeded by transient disturbances of more than 140% of the rated voltage value of 32V. See footnote. Ex na [ic] IIC T4 1. The apparatus is to be installed in an enclosure which maintains a minimum ingress protection rating of IP54 and meets the enclosure requirements of IEC , IEC and IEC Provisions shall be made externally to the apparatus to prevent the rated input being exceeded by transient disturbances of more than 140% of the rated voltage value of 32V. See footnote. Ex ic IIC T4 Gc FISCO 1. The apparatus is to be installed in an enclosure which maintains a minimum ingress protection rating of IP54 and meets the enclosure requirements of IEC and IEC Note: All MTL fieldbus power supplies are designed to protect the fieldbus trunk from transient disturbances on the DC power feed and will meet the requirements of maintaining transient disturbances below 140% of the rated voltage of 32V. 12 INM F300-2

17 10.2 IECEx Control drawings INM F

18 14 INM F300-2

19 INM F

20 16 INM F300-2

21 Note: The F301 Device Coupler is not covered by this manual, and is not currently available from MTL, but is included here as part of the overall certification documentation. INM F

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23 This page left blank intentionally. INM F

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